Name: 
 

Chapter 10



True/False
Indicate whether the sentence or statement is true or false.
 

 1. 

The run winding has fewer turns than the start winding on a split-phase motor.
 

 2. 

When a split-phase motor is starting, both the start and run windings must be energized.
 

 3. 

Three-phase motors can be 120 volts.
 

 4. 

Some three-phase motors can operate on 220 and 440 volts.
 

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 5. 

The windings are located in which part of the motor?
a.
rotor
c.
either a or b
b.
stator
d.
it depends on the type of motor
 

 6. 

The start winding should drop out of the circuit once the motor has reached about ____% of its rated speed.
a.
50
c.
90
b.
70
d.
100
 

 7. 

Capacitors are rated in which of the following?
a.
ohms
c.
microfarads
b.
watts
d.
microns
 

 8. 

The LRA of an electric motor is approximately ____ times that of the RLA.
a.
2
c.
7
b.
5
d.
10
 

 9. 

When checking resistance on a split-phase motor, common-to-run will be the ____ ohm reading, common-to-start will be the ____ ohm reading, and start-to-run will be the ____ ohm reading.
a.
high, medium, low
c.
medium, low, high
b.
low, medium, high
d.
medium, high, low
 

Short Answer
 

 10. 

List five types of electric motors commonly found in HVAC equipment.
 



 
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